eminent

Description: This is an old Dynacord Eminent Amplifier, featuring 5 ECC83 tubes, 2 EL34 tubes, a GZ34 rectifier, and an EM84 "Magic Eye." It has two instrument inputs and two microphone inputs, each with separate bass and treble controls, as well as a master volume control. The amplifier was acquired for 50 Euros in heavily used condition, with an additional investment made for new capacitors and a new EM84 tube. The remaining tubes were still functional. The amplifier uses Telefunken ECC83 tubes, while the rectifier and power tubes are likely Siemens, although they were unreadable. After disassembling and cleaning, each component was tested; all resistors were found to be functional, but all capacitors exhibited leakage. Replacement capacitors were sourced from 1000V polypropylene types, chosen for their similar size and appealing bright yellow color. Due to the unavailability of a direct replacement for the filter can capacitor, a new one was fabricated from the old unit. Following reassembly, the amplifier functioned correctly from the outset, producing a rich, rounded tone suitable for bass, with clean and loud output, though it is not recommended for guitar overdrive.

This Dynacord Eminent Amplifier represents a classic design in audio amplification, incorporating a combination of vacuum tubes that contribute to its distinct tonal characteristics. The ECC83 tubes, known for their low noise and high gain, serve as the preamplifier stage, while the EL34 tubes provide the power amplification necessary for driving speakers. The GZ34 rectifier ensures proper conversion of AC to DC, maintaining voltage stability and performance.

The dual input configuration allows for versatility in use, accommodating both instruments and microphones, making it suitable for various applications, from live performances to studio recordings. The inclusion of separate bass and treble controls enables precise tonal shaping, allowing users to tailor the sound to their preferences.

The restoration process highlights the importance of maintaining vintage audio equipment. The decision to replace all leaky capacitors with high-quality polypropylene types ensures longevity and reliability, while the custom fabrication of the filter can capacitor demonstrates an understanding of the amplifier's design and the necessity for maintaining original specifications.

The resultant sound quality, characterized by a full, warm tone, makes this amplifier particularly appealing for bass applications. The clean and loud output further emphasizes its capability, although it may not be suited for overdrive applications typically desired in electric guitar amplification. This amplifier exemplifies the blend of vintage craftsmanship and modern restoration techniques, preserving its legacy while ensuring functionality for contemporary use.This is an old Dynacord Eminent Amplifier, featuring 5 x ECC83, 2 x EL34, GZ34 rectifier and EM84 "Magic Eye". It has two instrument and two microphone inputs with separate bass/treble controls and a master volume.

I got it for 50 Euro in VERY used condition and spent about as much for new capacitors and a new EM84. The other tubes were still good (Telefunken ECC83, rectifier and power tubes unreadable, probably Siemens). After disassembling and cleaning I tested every single part in it. The resistors were all good, but ALL the capacitors were leaky. I took 1000V polypropylene types, because these had roughly the same size (and my daughter liked that bright yellow. ). There was no way of getting a replacement for the filter can cap, so I made a new one from the old. Here is the article about can cap restoration. Put everything together again and it worked from the start. Great round and fat tone for bass, clean and loud (definitely no guitar amp for overdrive).